Protecting device



R. VAN DOHLAN.

PROTECTING DEVICE. APPLICATION FILED IIIAII. 2o, |919.

Patented Oct. 12, 1920.

2 SHEETS-SHEET I.

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n. VAN n0HLAN. PROTECTING DEVICE.

APPLl'ATxoN FILED MAR. 2o. |919.

" Patented Oct. 12, 1920.

l UNVPE-D'E STATES PATENT OFFICE.

RICHARD vAN nonvLAN, orA LEAvENwoRTII, KANsAs, AssIeNoiil or oNEaroURTH To FREDERICK caoHNs, or nAs'I sr. LoUIs, ILLINOIS. v

PROTECTING. DEVICE.

Patented oct. 12, 1920.

Application led March 20, 1919. Serial No. 283,945.

To all whom t mayconcern:` n Be itknown that I, RICHARD VAN DoH'LAN, a citizen of the United-States, residing` at Leavenworth, in the county of Leavenworth and State of Kansas, have invented certain new and useful Improvements in Protecting Devices; and I do hereby declare the following to be a-full,`clear, andeXact description of the invention, such as will en-` able others skilled inthe art. to lwhich it ap? pertains to make andfuse'the saine. This invention relates -torprotecting devices, and more particularlyito a device specially adaptedl for use lin connection withinternal combustion engines. n

`The primary object of the invention yis to provide a device of the characterstatedfof. simple construction and operation whichv may b e readily connectednto the fuel supply pipe for the carbureter of an internal combustion engine, this device serving to thoroughly, strainV the `fuel so as to remove particles Aof foreign lmaterials therefrom -before the fuel flowsv into -the carbureter, thus preventing stoppage orvclogging of the carbureter from thisA cause.4 v

A further object is tojprovide -a straining device ofthe characterstatedof vsimple construction which may be'readily disassem--.

bled for `cleaning and removal of foreign materials therefrom. y

Further objects will appear; from the. de Y l. thereofl bymeans of elbow 15, or through tailed description.

In the drawings:

Figure 1 is a sideview ofA a carbureter' protector constructed in accordance with In tion, this strainer being formedl either of invention asapplied.

F ig. 2V through the protector. .A

Fig.4 3 is a ldetailsection through feed r pipe for supplyingfuel from' the protector c the supplemental ltance from its upper end, Wit-h a nipple 3 which is disposed diametricallyvopposite to nipple 2. The bottom l of this casing is .rounded,a,'sshown, tofpro'vide a water well,

`I andi's provided witl'ia Vcentral'draiii ycock 5v l nipple 3, as desired. 2

1s a central vvertical section.

other suitable material which fits tightly,

against the` upper end of the casin to form a fluid-tight closure therewith. Tipple 2 is connected by a union joint 9 to a. feed pipe 10 for conducting fuel tothe carbureter to which this .pipe is connected. The nipple 3 is connected to a fuel supply pipe 11 leading fromthe fuel tank, a coupling 12 and4 this pipe, being connected at its outer end with a supplemental supply pipe 13 which leads direct .from theV fuel supply tank. this supplemental supply pipe communicating with an auxiliary fuel supply pipe l14: connected to an elbow15 screwed into they cover V6 and in direct communication with the interior of casing 1 at the top thereof. The supplemental supply pipe 13 is provided, beyond theV point of connection of the saine with the auxiliary supply pipe 14, with a suitable control valve 16, Vthe auxiliary pipe 14 being provided with a similar-valve 17. e By means of these valves, the fuel flowing fromthe supply tank may be admitted to the casing 1 through the top .The supply pipe13 provided with a conical strainerjlS of foraminous construcprovided at its broaderfor base end with an annular flange 20` by-me'ans of which it may be securedin position bythe union 9 simultaneouslywith coupling of pipe 1Q and nipple. 2,r strainer 18being secured in position ina similar manner. The strainer 18serves to remove the larger particles of foreign materials vfrom the fuel during its flow through pipe 13 and maybe sremovedltherefrom by-disconnecting the unionl so as to.

be readily cleaned and replaced, strainer 19 cles of material which may be contained in the fuel after it leaves the cleaning and straining means contained in casing 1, to be later described. Y l y Y ,l Y

A cylindrical tube 21 is mounted at the center of casing 1v and extends the full length thereof, the ends of this tube fitting snugly against the bottom of the casing and against cover 6 when this cover is in position. The tube 21 is formed of wire fabric of extremely fine mesh, and serves as a supporting column for a pluralitvvof pairs of straining disks,'the pairs of isks being designated respectively by theV numerals 22, 23; 24, 25; 26, and 27 secured thereto in spaced relation. As will be noted more clearly from Fig. 2, these disks are formed of wire fabric of different meshes, each of the disks having its peripheral portion turned upwardly at right angles to provide a verticaly annular flange 28. In practice, disks 22 and 23 are of one-sixtyfourth inch mesh, disks 24 and 25 yare one-one hundred and twenty-eighth of an inch, and disks 26 and 27 of the finest mesh practical which will permit proper flow of fuel therethrough. Disks -22 and 23 which are of 1/64th lnch mesh serve as strainers for separating ythe larger particles of foreign materials from the fuel, the remaining disks 26 and 27 serve as strainingmediums forl removing the Vfine particles of foreign materials from the fuel.

n this mannerthe disks cooperate to insure thorough'and efficient straining of the fuel so as to effectually remove all foreign materials therefromV thus effectually pre-v venting stoppage or-cloggingof the carbureter due to the Vpresencel of minute particles of foreign materials in the fuel, such as occurs where a protector or straining device of this character is not employed. As will be noted, the straining disks are of such diameter as to fit snugly the interior of'casing 1, the peripheral flanges`28 of these disks serving to brace the same and to effectually,l prevent passagevofffuel between'the`V disksand the inner face `of the casing, the` disks and the central tubular support 21 upon whichthey are securedfthereforecon-l stituting'a unit which may be readily removedV from the casing, cover 6 being'removed, for cleaning, repairs, and other' purposes. In the event that any particles of `foreign materials should pass through the f screen 26, as when the device has been in operation for a considerable period "sothat the disks are more orfless saturated with foreign'materials, these particles ywill lbe retained by the supplemental screenV or strainer 19. As previously noted, this strainer, asV

well as the strainer 18, may be readily'removed for cleaning and repairs., In the event that the fuel Vcontains an unusually large amount offoreign materials, it is advvide a stud to project through a correspond# straining fluid flowingr therethrough-,

mitted to the -top of the casing 1y through elbow 15, the Vlarger, particles of Vmaterials being removed" by the top screen .22, after which the fuel is strained and cleaned in the manner described.V Under normalconditions, however, the' fuel may be admitted through nipple 3 onto the upper surface of disk 23, flowing downwardlyrthrough the various disks and the tube 21 sozas to be efl'ectually cleaned and strained thereby. If fuel should contain water this will gravitate to the bottom of the casing and collect in the Water well from which it maybe drawnvby means of the drain cock- If desired, though not necessarily, the easing 1 Ymay be providedwith a nipple 29 Ypro-.l jecting ytherefrom oppositely to nipple 3. l, This nipple'29 does'not communicate with i the interior of the casing and serves to proing opening provided through a securing clamp 30 adaptedv to fit tightly about the I casing and providedv with an arm 31 Vwhich may be secured to the automobile frame for bracing and supporting the casing. VUnder ordinary conditions, however, the provision of this clamp and thearm 31 thereof will not be necessaryV since the casing 1 will vbe connected to the fuelsupply and fuel feed: pipes so as'to be beffectually 'bracedand sup-` ported thereby. v

It will l'be evident lthat there may be' slight changes made in the details of con# struction and arrangement ofthe different" parts `of my invention, and'I intendto include all such variations, as fall within the vscope ofthev appended claims, in vthis ap-A plication in whichV a Vpreferred "form,V only-v di i of my invention isl disclosed.v 1,- .Y

TWhat I claim is 1. The Vcombination with a fuel supply pipe, of a casing, fuel strainingmeans car Vried thereby, means for optionally admitting fuel to the casing at thetop thereofV or at a point intermediate the top and bottorn of the casing, and a fuel feedrvpipe com-' Y municating with thev casing acentV the bottom thereof forconductingstrained fluid therefrom to acarbureter.VA

v2. The combination with 'fuel supply-1.15 Y

pipe,l of a vertically disposed casingprovided with straining means mounted there.; in, means for admitting Huid to said casing Y at the top or intermediate 'theto'p and: bot? tomthereof, optionally, a feed pipe commlu-V i' nicating with the casingjadjacent kthe bot- Y tom thereof for conducting strained fuel to acarbureter, and a supplementallstrainer removably secured` in the supply pipe for 3. In a deviceof the character described, a casing provided with a removable cover, a tubular supportingI member `of forarni-V nous construction mounted in the casing and f extending axially thereof,v a fdrai'ncock 130 mounted in the bottom of the casing at the ing this fuel from the casing adjacent the 10.

center thereof, a plurality of straining disks bottom thereof.

secured to said supporting member in super-` In testimony whereof I aix my signature posed spaced relation and fitting snugly the in presence of two Witnesses.

interior of the casing the supporting member and the disks oarried thereby being re- RICHARD VAN DOHLAN movable from the casing, and means for ad'- Witnesses:

mitting fuel to be strained to the casing A. H. STOUT,

adjacent the top thereof and for Withdraw- N. W. LEATHE. 

